Parking Citation

So yesterday, I received my DMV Registration Renewal Notice - $351!!!! There's apparently a $110 parking citation fee from almost a year ago that was never paid, which I'm perplexed about. I never just ignore any fees, bills, or citations... I turn to my husband and he looks perplexed as well. I call around to try and figure out where this was and seem to recall letting someone borrow my car during that time... I finally find the department that issued the citation and let them know I thought someone had borrowed the car. Then they let me know that my husband had written to try to get an administrative review, but never followed up after they replied to him - ARGH! I should have known.... I felt stupid, thanked the officer, and hung up the phone.